The book is now available! 77777...73553 (100-digits)
(another Prime Pages' Curiosity)
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                                            7777777777 7777777777 7777777777
7777777777 7777777777 7777777777 7777777777 7777777777 7777777777 7777573553
+ The largest prime less than a googol and consisting only of prime digits. [Gupta]




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